Simple fabrication of zirconium and nitrogen co-doped ordered mesoporous carbon for enhanced adsorption performance towards polar pollutants
Simple fabrication of zirconium and nitrogen co-doped ordered mesoporous carbon for enhanced adsorption performance towards polar pollutants
复制标题
简单制备锆和氮共掺杂有序介孔碳以增强对极性污染物的吸附性能
DOI：
10.1016/j.aca.2019.04.027
复制
发表时间：
2019
影响因子：
6.2
通讯作者：
Gangfeng Ouyang
中科院分区：
文献类型：
--
作者：
Chuyi Ni;Junlong Huang;Xintong Xie;Yueru Shi;Juan Zheng;Gangfeng Ouyang
有序介孔炭（OMCs）具有比表面积大、孔径可控、上级稳定性好等优点，是环境领域中一种引人注目的吸附材料。然而，由于有机分子膜本身的疏水性和强的π-π相互作用，使其在吸附非极性污染物方面具有优势，因此需要开发对极性污染物具有优异吸附性能的新型有机分子膜。通过直接碳化酚醛树脂和UiO-66-NH 2的复合物，得到锆氮共掺杂有序介孔碳（Zr/N-OMC），其具有均匀的介孔结构、大的比表面积（583 m2 g −1）和广泛分散的杂原子。由于这些突出的性能，Zr/N-OMC被制备为高性能的固相微萃取涂层。结果表明，锆和氮的掺杂可以作为活性中心与极性污染物发生相互作用，从而加快了吸附速率，增强了吸附容量。因此，将高性能Zr/N-OMC涂层光纤与气相色谱-质谱联用，建立了检测真实的水样中痕量酚类的灵敏分析方法。本研究为简单、高效地改性OMC，提高其吸附性能，拓展其应用领域开辟了新的途径。
Ordered mesoporous carbons (OMCs) are a kind of remarkable adsorbents in environment area due to high surface area, controllable pore size and superior stability. However, the inherent hydrophobicity and strong π-π interaction make OMCs have an advantage for the adsorption of nonpolar pollutants, leading to great demands for the development of new-type OMCs with outstanding adsorption efficiencies towards polar pollutants. The zirconium and nitrogen co-doped ordered mesoporous carbon (Zr/N-OMC) was obtained by directly carbonizing the composites of phenolic resin and UiO-66-NH2, with uniform mesopore structure, large surface area (583 m2g−1) and widely dispersed heteroatoms. Due to these prominent properties, the Zr/N-OMC was fabricated as high-performance solid phase microextraction coating. The results proved that the doping zirconium and nitrogen could act as active sites to interact with polar pollutants, resulting in fast adsorption rate and enhanced adsorption capacity. Therefore, the high-performance Zr/N-OMC-coated fiber was coupled with gas chromatography-mass spectrometry to establish sensitive analytical method for the detection of trace phenols from real water samples. This work would open up a new avenue for simple and efficient modification of OMC with enhanced adsorption performance to expand applications.